Picea koyamae

Pinaceae Picea koyamae Shiras.

Etymology
Picea refers to the classical names for spruces.
koyamae refers to the Japanese botanist M. Koyama, who collected the type specimen.

Colloquial Name
Koyama spruce

Distribution

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TDWG Codes
3, 38, JAP, JAP-HN

Habitat
The natural habitats for Picea koyamae are temperate forests. It is naturally found at an elevation of at least 2000 up to 2000 metres. Other conifers associated with Picea koyamae are:

USDA Hardiness zone – 5
Picea koyamae is hardy to USDA Zone 5 (Bannister & Neuner, 2001), meaning its frost tolerance lies somewhere in the range of -28.9C (-20F) to -23.3C (-10F).

Species Continuity
The population trend for Picea koyamae is decreasing. Currently, there exist about 1000 mature specimen. There are ongoing threats for Picea koyamae and they are listed as follows:

• 2 Overexploitation & Resource Use
  • 2.1 Logging & Wood Harvesting
• 3 Climate Change & Natural Disasters
  • 3.2 Storms / Flooding & Other Events
  • 3.1 Drought & Temperature Extremes
• 4 Invasive Species / Pathogens & Genetic Risks
  • 4.2 Problematic Native Species & Diseases
• 5 Natural System Modifications
  • 5.3 Other Ecosystem Modifications

IUCN Category – CR
According to the IUCN Red List, Picea koyamae has been assigned the status of CR(Critically Endangered). This means that according to the Red List criteria, this species qualifies as Critically endangered and is on the brink of being extinct in the wild.

Superordinate Taxa
The nearest superordinate taxon for Picea koyamae is Series Picea. The coordinate taxa for Picea koyamae are therefore:

Picea koyamae is further placed under Pinoideae. Picea koyamae is also placed under Pinaceae.

Cultivars
‘Bedgebury Cascade’